Whut? I think you're overestimating the carriers reach here man. Flash has 0 to do with any of the releases and carrier relations. As for late, well you can debate that but the OS is like a wizard, arriving precisely when it's meant to in 'February'.

I don't have one in mind particularly. Z30 and Q10 are close to Classic, if not the same, and I don't see the majority of BlackBerry users (including Z10 and Q5) not receiving the update.
You'll see by yourself when the time will come. I can't help you more. It may takes time depending on your carrier. And if you can't wait, you can install a leak.
Classic on some carriers received the update i'm already using on my Q10 since few weeks.

That memo was dated December 11th and mentioned in the OS would be released in the next few weeks. Plans must have changed. It is a month since the memo and only the Classic has had 10.3.1 pushed by Telus.